Messages

1

Window / Re: Poll event yields close when program starts

« on: April 15, 2020, 12:59:12 am »

Sorry, I shouldn't have said "crash". Thanks for the info on the while loop. That resolved my issue.

2

Window / [Solved] Poll event yields close when program starts

« on: April 14, 2020, 09:53:43 pm »

I'd been having strange crashes on program start and I have been able to produce a minimal example and counter example. I am using Visual Studio 2017, dynamically linking, and creating a 64 bit executable. I have verified that I am using the correct libraries for debug and for release. The issue only seems to happen in release though. When I include code to recreate the window, the program crashes. Even if the code is not executed. Here is my example

#include <SFML/Graphics.hpp>

int main()
{
   sf::RenderWindow* window = new sf::RenderWindow(sf::VideoMode(200, 200), "SFML works!");
   sf::RenderWindow* w2 = nullptr;
   sf::CircleShape shape(100.f);
   shape.setFillColor(sf::Color::Green);

   while (window->isOpen())
   {
      sf::Event event;
      window->pollEvent(event);
      printf("type: %d\n", event.type);
      if (event.type == sf::Event::Closed)
         window->close();
      if (sf::Keyboard::isKeyPressed(sf::Keyboard::A))
         window->close();
     
      if (sf::Keyboard::isKeyPressed(sf::Keyboard::W))
      {
         printf("recreate\n");
         window->close();
         delete window;
         window = new sf::RenderWindow(sf::VideoMode(200, 200), "SFML works again");
      }
     
      window->clear();
      window->draw(shape);
      window->display();
   }

   return 0;
}


The "recreate" print doesn't happen even when it crashes, and it prints "type: 0" for window close.
Commenting out the "window = new sf::RenderWindow..." in the loop causes it to run fine. It prints "type: 200" for the event type.
I'm confused how just including the line to "new" the window causes this issue even though it is not executing. Am I making some C++ mistake with the window memory?